Rubicon (also called "Rubicon Bay") is a former settlement in El Dorado County, California, United States. It was located on Lake Tahoe 4.5miles north of Emerald Bay.A post office operated at Rubicon from 1901 to 1906 and from 1909 to 1913, located at the "northeast quarter of Section 4 of Township 13 North, Range 17 East" (of the Mount Diablo meridian). It sat 1/16th (330 feet) north of Rubicon Creek.[1] In 2011, Rubicon received over 500 inches of snow. Rubicon was a separate community from Rubicon Springs, in the mountains to the west, and Rubicon Lodge to the north.